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濕法、半干法、干法三大類脫硫工藝。常見的脫硫方法為鈣法脫硫與氨法脫硫，爐內(nèi)噴鈣、等離子、海水脫硫等市場很小，僅適用與特殊情況。
There are three major types of desulfurization processes: wet, semi dry, and dry. The most common desulfurization methods are calcium based desulfurization and ammonia based desulfurization. The market for furnace injection of calcium, plasma, seawater desulfurization, etc. is very small and only suitable for special situations.
濕法脫硫技術(shù)較為成熟，效率高，操作簡單。傳統(tǒng)的石灰石/石灰—石膏法煙氣脫硫工藝采用鈣基脫硫劑吸收二氧化硫后生成的亞硫酸鈣、硫酸鈣，由于其溶解度較小，極易在脫硫塔內(nèi)及管道內(nèi)形成結(jié)垢、堵塞現(xiàn)象。
Wet desulfurization technology is relatively mature, efficient, and easy to operate. The traditional limestone/lime gypsum flue gas desulfurization process uses calcium based desulfurizers to absorb sulfur dioxide and generate calcium sulfite and calcium sulfate. Due to their low solubility, they are prone to scaling and blockage in the desulfurization tower and pipelines.
雙堿法煙氣脫硫技術(shù)是為了克服石灰石—石灰法容易結(jié)垢的缺點而發(fā)展起來的。隨著新環(huán)保法的逐步實施，對脫硫效率要求也越來越高，能滿足脫硫效率的脫硫方式唯有鈣法與氨法，但是鈣法脫硫存在工藝復(fù)雜、堵塞、腐蝕、硫石膏堆置等問題，但仍是當(dāng)前的主流脫硫方式；
The dual alkali flue gas desulfurization technology was developed to overcome the disadvantage of easy scaling in the limestone lime method. With the gradual implementation of the new environmental protection law, the requirements for desulfurization efficiency are also increasing. The only desulfurization methods that can meet desulfurization efficiency are calcium method and ammonia method. However, calcium method desulfurization has problems such as complex process, blockage, corrosion, and sulfur gypsum stacking, but it is still the current mainstream desulfurization method;
氨法脫硫方式工藝較簡單，不會產(chǎn)生任何廢棄物，且產(chǎn)生的硫酸銨可以做復(fù)合肥，但仍存在投資較大，運行費用較高的問題。氨法脫硫是當(dāng)前問題少的脫硫方式，也是以后的主流趨勢，新的脫硫脫硝一體化技術(shù)已逐步完善，能夠達到新環(huán)保法超低排放的標(biāo)準(zhǔn)。
The ammonia desulfurization method has a relatively simple process and does not generate any waste. The generated ammonium sulfate can be used as a composite fertilizer, but there are still problems with high investment and operating costs. Ammonia desulfurization is currently the least problematic desulfurization method and also the mainstream trend in the future. The new integrated technology of desulfurization and denitrification has been gradually improved, which can meet the ultra-low emission standards of the new environmental protection law.
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2024-05-16
